Hello,
Well this is a somewhat difficult question to answer. Here has been my experience. If you do not have the ability to see a surgeon and have this corrected by them (in my area it would be anywhere from $2000 to $5000. Then I always suggest strict cage rest. No leaving the cage for two weeks. No exceptions. The crate should have a very low bed, low sided litter box and food and water. They should be fed a watered down wet food to keep the stool soft and easy to pass. After two weeks see your vet for a recheck X-ray to see how the pelvis is healing.
Have the cat spayed asap.
If the cat presents with anal tone and deep pain in all four feet I recommend cage rest
The best option is surgery. If you cannot afford it try cage rest. They will be painful for a few day. A fentanyl patch might help or try buprinex. Ask your vet about these.
Let me know how she does
Sounds good!! Best wishes!